(22156) Richoffman Main-belt Asteroid
Discovered on 21 November 2000 by LINEAR at Socorro.
Richard Hoffman mentored a finalist in the 2005 Discovery Channel Young Scientist Challenge (DCYSC), a middle school science competition. He teaches at the Kastner Intermediate School, Fresno, California.Naming citation (20051019/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Richoffman is today
Seen from above the solar system on 2026-10-14: Richoffman is 2.74 au from the Sun and 3.74 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 22156 |
| Provisional designation | 2000 WQ94 |
| Orbit class | Main-belt Asteroid |
| Diameter | 6.35 km (#8,436 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0670 |
| Absolute magnitude (H) | 14.87 |
| Orbital period | 3.49 years |
| Semi-major axis | 2.30 au |
| Perihelion – aphelion | 1.86 – 2.75 au |
| Eccentricity | 0.193 |
| Inclination | 2.62° |
| Closest distance between its orbit and Earth's (MOID) | 0.859 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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